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Thread: How to control depth of field

  1. #21
    Senior Member
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    Default Re: How to control depth of field

    Quote Originally Posted by ernie1984 View Post
    sorry guys..i'm talking bout Panasonic Lumix DMC-FZ50

    so..the lense is 35 - 420 mm

    no the actual optical focal length of your lens is 7.4-88.8mm, 35-420mm is just the 35mm equivalent. just look at the front of your lens, it is clearly written there.

    the sensor size is 7.185.32mm vs 3624mm of a 35mm film. a 1.6 crop factor sensor on DSLR like the Canon 20D would be roughly 22.515mm in size. so you can see the FZ50 (or any other digicams) has a sensor only 1/9 the area of even a 1.6 crop DSLR sensor.

    both of these factors add up to give digicams very deep DOF.

  2. #22

    Default Re: How to control depth of field

    Quote Originally Posted by hwchoy View Post
    no the actual optical focal length of your lens is 7.4-88.8mm, 35-420mm is just the 35mm equivalent. just look at the front of your lens, it is clearly written there.

    the sensor size is 7.185.32mm vs 3624mm of a 35mm film. a 1.6 crop factor sensor on DSLR like the Canon 20D would be roughly 22.515mm in size. so you can see the FZ50 (or any other digicams) has a sensor only 1/9 the area of even a 1.6 crop DSLR sensor.

    both of these factors add up to give digicams very deep DOF.
    oh..ic ic..thanks alot...

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